why single induction motor is not self starter?
Answers were Sorted based on User's Feedback
in single phase induction motor stator has single phase
winding,when we give single phase supply, it creats a
pulsating magnetic flux in the air gap but for rotor
rotation there should be a rotating flux.so it is not self
starting.
for starting either auxiliary winding or any means which
splits the single phase flux in at least 2 phase flux can be
used
Is This Answer Correct ? | 8 Yes | 0 No |
You could have gone to Google and found this for yourself.
"Single phase induction motor can't produce continuously
rotating magnetic field in the air gap, as either N or S
pole would be present at a time. Single pole is not
sufficient to drive the rotor from one end. So a capacitor
is employed to shift the phase."
Is This Answer Correct ? | 3 Yes | 0 No |
Single phase supply to motor can't produce continuously
rotating magnetic field as either N or S
pole would be present at a time. so there will not be force
of repulsion as well as attraction This is not sufficient
to drive the rotor from one end. So a capacitor
is employed to shift the phase & to create rotating magnetic
field.
Is This Answer Correct ? | 2 Yes | 0 No |
what is electrical?
what you mean by vector group of a 3 ph transformer
how we calculate the knee point of a protection and metering CT and what is the testing procedure.
why transformer ratings in kva? & DG ratings in kva? & Motor ratings in kw/HP?
What is DTR erection?
What is the meaning of 40X8X2 busbar dimensions for carring load of 400 Amps
What are locations arc protection relay is fixed.
Explain cos(theta) and Sin(theta)
Difference between KW & kVA
7. Hrc fuse provides best protection against.......
5 Answers SSC, UGVCL Uttar Gujarat Vij Company Ltd,
why circuit breaker closing time is always higher then tripping / opening time.
Why generating voltage is limited up to 22kV?